/*
 * Copyright (c) 2014 AsyncHttpClient Project. All rights reserved.
 *
 * This program is licensed to you under the Apache License Version 2.0,
 * and you may not use this file except in compliance with the Apache License Version 2.0.
 * You may obtain a copy of the Apache License Version 2.0 at
 *     http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the Apache License Version 2.0 is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under.
 */
package org.asynchttpclient.netty.request;

import io.netty.channel.ChannelProgressiveFuture;
import io.netty.channel.ChannelProgressiveFutureListener;

import org.asynchttpclient.netty.NettyResponseFuture;

public class WriteProgressListener extends WriteListener implements ChannelProgressiveFutureListener {

    private final long expectedTotal;
    private long lastProgress = 0L;

    public WriteProgressListener(NettyResponseFuture<?> future,//
            boolean notifyHeaders,//
            long expectedTotal) {
        super(future, notifyHeaders);
        this.expectedTotal = expectedTotal;
    }

    @Override
    public void operationComplete(ChannelProgressiveFuture cf) {
        operationComplete(cf.channel(), cf.cause());
    }

    @Override
    public void operationProgressed(ChannelProgressiveFuture f, long progress, long total) {
        future.touch();

        if (progressAsyncHandler != null && !notifyHeaders) {
            long lastLastProgress = lastProgress;
            lastProgress = progress;
            if (total < 0) {
                total = expectedTotal;
            }
            if (progress != lastLastProgress) {
                progressAsyncHandler.onContentWriteProgress(progress - lastLastProgress, progress, total);
            }
        }
    }
}
